On sending delegate.
Represent a callback which will be called every time the SDK starts sending some data.
public delegate void OnSendingDelegate( byte Payload, uint Channel )
Public Delegate Sub OnSendingDelegate ( Payload As Byte(), Channel As UInteger )
public delegate void OnSendingDelegate( array<unsigned char>^ Payload, unsigned int Channel )
type OnSendingDelegate = delegate of Payload : byte * Channel : uint32 -> unit